Lake Petersburg, Illinois

Census-designated place in Illinois, United States

39°58′59″N 89°51′54″W / 39.98306°N 89.86500°W / 39.98306; -89.86500^[1]CountryUnited StatesStateIllinoisCountyMenardArea

^[2]

• Total2.08 sq mi (5.39 km²) • Land1.81 sq mi (4.68 km²) • Water0.28 sq mi (0.71 km²)Elevation

^[1]

581 ft (177 m)Population

(2020)^[3]

• Total740 • Density409.52/sq mi (158.15/km²)Time zoneUTC-6 (Central (CST)) • Summer (DST)UTC-5 (CDT)ZIP Code

62675 (Petersburg)

Area codeArea code 217GNIS feature ID2629866^[1]Websitelakepetersburg.org

Lake Petersburg is a census-designated place in Menard County, Illinois, United States. Its population was 740 as of the 2020 census.^[3] The unincorporated community centers on a small reservoir, which is used extensively by residents for recreation.

Geography

Lake Petersburg is southwest of the center of Menard County, surrounding a reservoir of the same name, built in a valley that flows to the Sangamon River less than a mile to the east. Petersburg, the Menard county seat, is 2 miles (3 km) to the north.

According to the U.S. Census Bureau, the Lake Petersburg CDP has a total area of 2.08 square miles (5.39 km²), within which the reservoir occupies 0.28 square miles (0.73 km²), or 13.2% of the community's area.^[2]

Demographics

Historical population
Census	Pop.	%±
2010	719	—
2020	740	2.9%
U.S. Decennial Census^[4]

References

^ ^a ^b ^c U.S. Geological Survey Geographic Names Information System: Lake Petersburg, Illinois
^ ^a ^b "2022 U.S. Gazetteer Files: Illinois". United States Census Bureau. Retrieved March 14, 2023.
^ ^a ^b "P1. Race – Lake Petersburg CDP, Illinois: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved March 14, 2023.
^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.